Rotary engine.



No. 892,374,. PATENTED JUNE so, 1908. J. S. HILLYER.

ROTARY ENGINE.

APPLICATION IILLD DEC 14 1906 Z SHEETS-SHEET 1.

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WITNESSES.- 71% No. 892,374. PATENTED JUNE 30, 1908. J. S. HILLYER.

ROTARY ENGINE.

APPLICATION FILED D20. 14, 1906.

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UNITED STATES PATENT OFFICE.

JAMEs s. HILLYER, orrnocron, MINN SOTA.

ROTARY ENGINE.

Application filed December 14, 1906.

To all whom it may concern:

Be it known that I, JAMES S. IIILLYER, a citizen of the United States, residing at Proctor, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to rotary engines and has for its object the construction of areversible rotary engine.

It consists of the constructions, combinations and arrangements of parts hereinafter described and claimed.

In the drawings Figure 1, is a front elevation, partly in section of said engine with the cover removed, and omitting the steam chest and exhaust chamber. Fig. 2, is a central vertical longitudinal section partly broken away of said invention. Fig. 3, is a central vertical cross section through the rear cover forming part of said invention, and through a portion of the power shaft. Fig. 4 is a reduced front elevation of said invention, and Fig. 5, is a central vertical transverse sectional view of the steam chest, exhaust chamber and governing valves.

In the drawings, 1, is a casing embodying one or more covers 1, Within which casing are formed the chambers 2, 2* and 3, divided from each other by the walls 1 and 1 The chamber 3 is cylindrical. \Vithin the chamber 3, is positioned a wheel mounted on a shaft A, which it is adapted to turn, which Wheel comprises a body portion 4, and shoulders 4* formed upon the periphery of said body portion and extending radially to the wall of said chamber. Between the body portion of the wheel and the concentric cylinder walls, and intermediate of the said shoulders are thus formed spaces 3, 3 and 3. Opening into the chamber 3 are steam feed ports 5 extending through the front cover and communicating in any suitable manner, as by means of the pipes 5 with the steam chest 5, said ports bemg governed in any suitable manner, as by means of barrel valves 5. Opening into said chamber 3 are also exhaust ports 6, extending through the front cover and communicating in any suitable manner or by any suitable means, as by the pipes 6 with the exhaust chamber 6", said ports be- Specification of Letters Patent.

Patented June 30, 1908.

Serial No. 347,795.

ing governed by any suitable means as by the barrel valves 6.

The steam chest 5 and the exhaust chamber are divided by a dia hragm 7, forming tubes for the reception of the barrel valves. Each of said tubes is enetrated by two ports 7 and 7 respective one communicating with the exhaust chamber and one communicating with the steam chest. The barrel valves are each provided with one port, adapted to register with one of the ports 7' or with one of the ports 7 according to the position to which they are swung bythe valve stems 8. Said valve stems are pivoted, through slotted apertures in the hereinafter referred to draw rod, to a draw rod 9, moving between guides 10 and provided with a rack 9 adapted to engage a worm 11 by which it is operated. The valves are first set so that two of them communicate with the steam chest and two with the exhaust chamber. By operating the draw rod, the valves which first communicated with the steam chest may be made to communicate with the exhaust chamber and the valves which first communicated with the exhaust chamber may be made to communicate with the steam chest, thus reversing the engine. At center all the valves will be closed. Opening into the steam chest is a suitable conduit 12, from a suitable source of steam supply, not shown. Opening out of the exhaust chamber is a conduit or port 13, through which the exhaust steam may escape. When I say steam, I do not mean to limit my invention to the use of steam but desire to include the use of water, compressed air or any suitable pressure fluid.

Extending through the walls of said chamber 3 are abutments 14 in such position as that a steam feed port and an exhaust ort will open into said chamber on each side of each abutment and between the opposite abutments. Said abutments are carried upon rocker arms 14 and are adapted to bear against the peripheral face of the wheel, and to be forced outwardly by the shoulders, and to be pressed inwardly by any suitable means as by springs 14*. Thus as the wheel revolves, the abutments ride up upon, or follow down the curved faces of the shoulders 4*, always keeping in contact with the wheel or shoulders and forming points of resistance for the action of the engine-operating fluid. These abutments are as wide as the wheel is thick. A bull ring or packing ring 15, which in the drawings is partly broken away, is preferably positioned in a countersink in the side of the wheel. Extending through said shoulders radially of the wheel are spring supported packing blades 16 adapted to comlng against it until such preceding shoulder passes the next exhaust port 6, whereupon such steam escapes through such exhaust ort. At the same time the relatively folowing shoulder 4"", will have intervened between the abutment and the exhaust port and will have uncovered the steam feed port and will in its turn receive the impulse and driving pressure of the steam. As before suggested, the controlling valves may be so operated as that what were first feed ports become exhaust ports, and vice versa.

Having now described my invention, what I claim is.

In a rotary engine, the combination of a casing containing a cylindrical chamber, a Wheel mounted within said chamber concentrically thereof and comprising a body portion and shoulders formed on the periphery of said body 'ortion and extending to the cylindrical wafi of said chamber, and each of said shoulders slo ing in opposite directions away from said cy indrical wall to zero at the said body portion, movable abutments penetrating the cylindrical wall of said chamber between adjoining feed and exhaust ports and adapted to bear against said wheel yielding means for forcing said abutments against said wheel, said casing being provided with power-fluid feed and spent fluid exhaust ports, one of which feed, and one of which exhaust ports is positioned on each side of each of said abutments, means for governing said ports and adapted to be operated to change the function of the feed ports from feed to exhaust service and vice versa, means JAMES s. HILLYER.

Witnesses JAMES T. WATSON, W. H. SMALLwooD. 

